I have the same issue. I have a rule that the only clothes I buy are soft. I can't tolerate if elastic from underwear touches my skin. I am picky about sheets. I 'itch' from many types of fabric.

Honestly, I have always had this issue and my mom used to knit beautiful WOOL sweaters she made me wear as a kid.....it was torture! Poor woman....poor me!

I honestly can't say when my PN became PN, but I had restless leg as a kid....so something was not right with me from childhood....

Give me soft fleece, worn cotton, and silky things...and no from itchy things.